Oilpan: Replace RefPtrs and raw pointers to Node and its subclasses in core/frame and core/page wit…

Source/core/frame/SmartClip.h

Index: Source/core/frame/SmartClip.h
diff --git a/Source/core/frame/SmartClip.h b/Source/core/frame/SmartClip.h
index b0e922051106616b6b49329dc9a1f4836211f39d..21955a2b3eac80532e34a64b3be78e4a4e23aa9e 100644
--- a/Source/core/frame/SmartClip.h
+++ b/Source/core/frame/SmartClip.h
@@ -39,11 +39,12 @@ namespace WebCore {
 class SmartClipData {
 public:
     SmartClipData()
+        : m_isEmpty(true)
     {
     }
 
     SmartClipData(Node* node, IntRect rect, String string)
-        : m_node(node)
+        : m_isEmpty(!node)
         , m_rect(rect)
         , m_string(string)
     {
@@ -52,7 +53,7 @@ public:
     String toString();
 
 private:
-    RefPtr<Node> m_node;
+    bool m_isEmpty;
     IntRect m_rect;
     String m_string;
 };
@@ -74,7 +75,7 @@ private:
     Node* minNodeContainsNodes(Node* minNode, Node* newNode);
     Node* findBestOverlappingNode(Node*, const IntRect& cropRect);
     bool shouldSkipBackgroundImage(Node*);
-    void collectOverlappingChildNodes(Node* parentNode, const IntRect& cropRect, Vector<Node*>& overlappingNodeInfoTable);
+    void collectOverlappingChildNodes(Node* parentNode, const IntRect& cropRect, WillBeHeapVector<RawPtrWillBeMember<Node> >& overlappingNodeInfoTable);
     IntRect convertRectToWindow(const IntRect& nodeRect);
     String extractTextFromNode(Node*);